Black and White Office Chair Repair

The following methods can be referred to for the repair of black and white office chairs:

Repair Method for Adjustable Seat Backrest That Cannot Stand Upright

If the adjustable seat backrest of an office chair cannot stand upright, it may be due to a hydraulic system failure. First, lay the chair on its side and carefully inspect the transmission components. If non-standard fixing screws (e.g., 10*1) are found, standard size 10 screws should be used for replacement. During replacement, if the threads do not match, a tap can be used to create new threads, or the standard screw can be directly screwed in. It is also recommended to install screws with a length of 30 millimeters, as the original screws may be too short to effectively fix the components, preventing the backrest from standing upright.

If the cooperation between nuts and bolts is not up to standard, it can also affect the normal adjustment of the backrest. In this case, additional nuts can be screwed onto the bolts to enhance the stability of the fixation by increasing the number of nuts. At the same time, adjust the position of the screws with washers to ensure that the screws do not interfere with the normal movement of the hydraulic rod, thereby restoring the upright function of the backrest.

Disassembly and Repair Steps

If the above methods do not solve the problem, disassembly and repair may be required. The specific steps are as follows:

• Preparation Stage: Place the chair on a level surface and adjust it to a normal sitting position to ensure stability during disassembly and avoid accidents.
• Remove the Connection Between the Seat and the Base: Press down and pull back with the adjustment lever to loosen the connection between the seat and the base, and then remove it.
• Remove the Armrests: After loosening the four screws on the armrests, carefully remove them. During removal, keep the screws safe to avoid loss.
• Remove the Backrest: After completing the above steps, the backrest can be removed for detailed inspection and repair of the internal components.

Pay special attention to safety during disassembly to avoid injury due to improper operation. At the same time, keep all parts safe for subsequent assembly. If the repair process is complex or you are not familiar with the repair operations, it is recommended to entrust the work to professionals to avoid damage to the chair or safety issues caused by operational errors.